Assigxob of one



(No Model.)

T. J. EUBANKS-v GULTVATOR.

Patented Apr. 13, 1886.

N. PETERS Flmmucmgmphf. washingion. D. (L

lUNTTnn tiTnTns PATENT @Trina THOMAS JEFFERSON EUBANKS, OF ROGERS, TEXAS, ASSIGNOR OF ONE- HALF TO F. M. CHANDLER, QF SAME PLACE.

CULTlVATOR.

SPECIFICATION forming part of Letters Patent No. 339,632, dated April 13, 1886.

Application filed February 3, i886. Serial No. 190,D5. (No model.)

To @ZZ whom it may concern:

Be it known that I, THOMAS Jnrrnnson FUBANKs, a citizen of the United States, residing at Rogers, in the county of Bell and State of Texas, have invented a new and useful Improvement in Cultivators,of which the following is a specification, reference being had to t-he accompanying drawings.

My invention relates to an improvement in IO cultivators, and it consists in the peeuliarconstruction and combination of devices, that Will be more fully set forth hereinafter, and particularly pointed out in the claims.

The object of my invention is ton provide a i 5 device to enable the shovels of the cultivator to yield when they strike an immovable object-such as a stone or stnnip--and thereby prevent the eultivator shovels from being broken,and more especially in time-saving in 2O readjusting the shovel for plowing.

In the drawings, Figure l is a side elevation of a cnltivatorembodyingmy invention. Fig. 2 is a top plan view of the same. Fig. 3 is a vertical transverse sectional view, taken on i g5 the line .fc .r of Fig. 2.

verse sectional view.

l have herein shown my invention as applied to a single shovel cnltivator for convenience in illustration; but it will be readily undern 3@ stood that my improved devices are adapted to be applied to cultivators having two or more shovels or plows, and which are adapted to be drawn by one or more horses.

A represents the eultivatorbearn, and B represents a metallic clip having depending anges C, which bear ou opposite sides of the upper portion of the rear end of the beam. This clip has a longitudinal slot, D, made in its front end on its upper side, and from one side of the clip,at the upper edgethereof, ex-

tends a lateral flange or plate, E; in the front edge of which is Inadea V-shaped opening, F.

G represents a lower clip or casting which is provided with llanges H,to engage the sides of thebeam A below the clip B, and has a de.- pending standard,l,in thelower end of which is made an opening, K.

L represents a metallic block, which has a transverse groove, M, on its outer side, and 5o through this block passes a pivotal bolt, N,

the outer end of which is bent in a seiuicircle Fig. 4 is a detail transto form a keeper to secure the plow-foot O in the groove M on the block. The shank of the bolt passes through the openingK in the lower end of the standard Land on the inner side of the said standard washers and nuts P are secured on the threaded shank of the bolt, vto clamp the block L and the plow-foot to the standard. The upper end of the plow-foot restsnornially in the V-shaped opening F of 6o.

the clip B. l

The clips B and G are secured to the beam by a bolt, R, which passes down through the slot D and through a vertical opening in the beam, and through the lower side of the clip G. A nut, It', is screwed on the lower projecting end of the bolt Rr, and thereby clamps the clips B and G lirully to the beam A. By reason of the slot D it will be seen that the clip B may be moved forwardly or rearwardly on the beam; but the clip G is immovable. As the plow foot is pivoted to the depending standard of the clip G, and as the upper end of the said foot rests in the inner end oi' the opening F in the clip B, it follows that by moving the said clip B the angle of the plow-foot may be adjusted to any requisite degree to cause the shovel or plow to run in the ground at any desired angle. As the upper end of the plow -foot bears against the converging o sides of the opening F it is held rigidly therein and prevented from playing laterally.

S represents a pair of pivoted jaws, which are fnleruined together and are pivoted to the plate Ein rear of the opening F by means of 5 8 5 a bolt, T. The front ends of the jaws S are out obliquely in opposite directions, as at S', and at the inner ends of the oblique edges S is formed a seniicircular opening, S, for the reception of the upper end of the plow-foot, 9o one-half of the said opening being formed in each jaw.

S3 represents rearward-diverging arms with which the fulcrurned jaws are provided, and the said arms are connected by a bolt,T, that 9 5 passes through slotted openings made in the rear ends of the arms. A coiled extensile spring, U, is placed on the bolt T', and bears between the arms S3, and on the outer end of the bolt T is a nut, T2, by means of which the 10o tension of the spring may be regulated, and whereby the jaws S may be partly opened, so

as to permit the upper end of the plow-foot to readily disengage itself therefrom. The outward movement of the arms S'1 is limited by stops E', which are made on the rear side of the plate E.

Vhen the cultivator or plow is in operation the tension of the springs on the clamping-jaws is sufficient to hold the plow-foot against the resistance of the soil as the shovel runs therethrough. When the shovel strikes a stone, stump, or other obstruction,the upper end of the plow-foot is freed from the clamping-jaws and the shovel is turned on its pivotal bolt to the position shown in dotted lines in Fig. l, and passes unharmed over the stone or obstruction. The plowman with his foot presses against th'e lower end of the shovel-foot and throws the upper end thereof rearwardly into re-engagement with the clampingjaws without further loss of time.

Having thus described my invention, I claim* l. The combination, in a plow or cultivator, of the pivoted plow-foot, the clamping-jaws for engaging the upper end thereof, the said vjaws havingr the oblique opposite inclined front ends,S,and the opening S2, made in their opposing sides at the inner ends of the said oblique edges to receive the plow-foot, substantially as described.

2. The combination, ina plow or cultivator, of the pivoted plow-foot, the clip B, secured on the plow-beam and movable longitudinally thereon, the said clip having the extending plate E, provided with the opening F, and the spring-actuated clamping-jaws for secu-ring the upper end of the plow-foot7 substantially as described.

3. The combination of the beam, the clip G, firmly attached thereto, the plow-foot pivoted to an arm depending from clip G,and the clip B, movable longitudinally on the beam and provided with devices for engaging and locking the upper end of the pivoted plowfoot, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

THOMAS JEFFERSON EUBANKS.

Witnesses:

W. S. HODGE, G. D. BRADFORD. 

